Home / 7,680.66-11,520.59-3,783.75

Finding the Fourth Proportional to 7,680.66, 11,520.59 and 3,783.75

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Solution

The fourth proportional to 7,680.66, 11,520.59 and 3,783.75 is: 5,675.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,680.66 : 11,520.59 = 3,783.75 : x
  2. Step 2: Convert to fraction form
    7,680.66/11,520.59 = 3,783.75/x
  3. Step 3: Cross multiply
    7,680.66x = 11,520.59 × 3,783.75
  4. Step 4: Simplify right side
    7,680.66x = 43,591,013.49
  5. Step 5: Solve for x
    x = 43,591,013.49/7,680.66
  6. Step 6: Final answer
    x = 5,675.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.